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Heat Shift: 90-100 Degree Temps Shift From California To Central Plains

5 May 2014, 10:51 am

It’s amazing how much temperatures can swing around in just one week.  Plus, it’s Cinco De Mayo and there is a *lime shortage!*  While we cannot give you limes… we CAN talk some temperatures.

These were the HOT high temperatures recorded in downtown Los Angeles last week.

 

April 29th: 92°

April 30th: 91°

May 1st: 92°

May 2nd: 96°

May 3rd: 89°

 

With rain on the way, or at least on the way to nearby locales, the 90s are definitely done for that area.  The cooldown for California (Los Angeles’ forecast high is near 70 for today) has been significant, and represents a big shift in the jetstream.

It’s a shift in the jetstream that people are definitely noticing in the central Plains.

Yesterday Wichita, KS, joined a group of extra-hot temperature cities… with records falling in places like Wichita and Oklahoma City.

 

5-5_WALT FB

Wichita ended up with their earliest 100 degree day *ever!*  It’s hard to believe that a place that gets as hot as Wichita could see a record like that fall – but typically their 100 degree days are in the heart of summer.

So what switched to make the 90+ degree temperatures over California slide over the central Plains states?  Let’s take a peek…

Take a look at this graphic below:

 

AARONBLOG1
These images courtesy of Unisys Weather

This was the upper air setup for May 2nd (the 96 degree day at downtown Los Angeles).  See how the jetstream (the right side image) lifts up north to Washington and Oregon?  That is a massive ridge you see in that image… and unfortunately for folks in those areas the warmth slipped south & east.

Here is what things look like today/tonight:

 

AARONBLOG2

 

The jetstream layer sinks down toward southern California, the dip known as a trough of low pressure, and a ridge is still located over the central sections of the nation.

 

AARONBLOG3

Those “L” letters you see on the maps represent the upper level low pressure.  Notice how over the next 48 hours the low goes further south.  That is the setup for a severe weather scenario by midweek.

Stay tuned!

WeatherNation Meteorologist Aaron Shaffer @ashafferWNTV

Aaron Out web2

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